JP2020106509A - Movable constant-humidity and constant-temperature chamber and testing equipment - Google Patents

Abstract

To provide a cooling system for cooling a sample with a simple structure and enable the sample to be tested using measurement equipment installed in a place other than a test room.SOLUTION: A movable constant-humidity and constant-temperature chamber according to the present invention formed of a plurality of heat insulation panels and frames comprises: a structure having an interior space in which a sample subject to a test can be installed; an air conditioning unit installed above the structure and capable of maintaining the interior space under a predetermined environment condition; and a movement auxiliary unit arranged below the structure and capable of assisting the movement of the structure by lifting the structure with respect to a floor surface.SELECTED DRAWING: Figure 1

Description

The present invention relates to a mobile constant temperature and humidity chamber and a test facility used for a test for measuring the performance of an automobile, its drive train elements, and constituent parts of the automobile.

At the time of development of an automobile, when focusing on various objects for measuring various performances, an engine test, a vehicle test, a drive train (power train) test and the like can be mentioned. The above-described test is carried out by carrying in a vehicle, an engine, a drive system element (bare chassis), etc. used as a test object, and operating and testing the test object, for example, a working space for forming temperature and humidity conditions, and measuring equipment. Etc. are installed in a test room where a person who is involved in the test has a measurement space in which monitoring and control are performed. At least the working space in the test room is a facility for maintaining an internal space surrounded by, for example, a heat insulating wall or a soundproof wall under environmental conditions (temperature, humidity, etc.) in which the use of the vehicle is assumed. Therefore, as the test equipment, in addition to the air conditioning equipment for maintaining the internal space of the test room in the environmental conditions (temperature and humidity, etc.) under which the use of the vehicle is assumed, the measurement is performed by connecting to the specimen that can meet the above environmental conditions. A measuring instrument to do this is required. Therefore, the operation console and panel equipment, which are vulnerable to extreme temperature conditions and sudden temperature changes, should be separated and installed in a room temperature environment where there are testers involved in the test, and the test specimen and its driven shaft and necessary operating equipment, Testing is performed by setting the test room where cables and piping that supply utilities from the outside are installed under the assumed environmental conditions. As an environmental test room, the test specimens that are tested under environmental conditions from low temperature to high temperature and from low humidity to high humidity are often tested with an engine that is an internal combustion engine or a vehicle that incorporates it. The engine was tested by connecting the utility with an engine bench smaller than the vehicle, and in the case of the vehicle, it was carried out in an environment individualized with a chassis dynamometer with a built-in driving device and utility.

However, due to the current motorization changes, electric motors have entered the drivetrain elements of automobiles, and the number of hybrid and electric vehicles has increased, so the electric motors in the drivetrain must be recombined each time. There has been a demand for reassembling equipment during testing.

Also, an engine dynamometer that measures the performance of the engine alone while applying a simulated load to the engine by connecting the sample to the output shaft of the engine as an engine, and the sample as a vehicle with worn tires on the drive wheels of the vehicle On the other hand, chassis dynamometers that measure the performance of the entire vehicle while imitating an endless road surface and applying a simulated load have been often used in automobile development tests. With the addition of machines and electric motors, powertrain dynamometers have emerged, specializing in testing for the development of driveline elements.

When performing a test simulating a low temperature environment using such a test facility, it is necessary to first cool the sample. For example, the cooling of the test piece is performed by installing the test piece inside a test room, which is a large space, and then cooling the inside of the test room for a certain period such as overnight. In other words, when cooling the specimen, it is necessary to cool the inside including the wall of the test room, which is a large space and has a large heat capacity concrete skeleton, and in order to cool other things when cooling the specimen, It costs more than necessary. Then, each measuring part and the simulated load part of the dynamometer of the power train are vulnerable to thermal changes, and it takes a great deal of cost to take measures against the influence of heat.

In this case, all expensive powertrain dynamometers must be installed in the environment room, while heat-sensitive parts that are vulnerable to thermal fluctuations must be severely insulated, resulting in enormous construction costs for the environment test room including the machine room. In addition, the powertrain dynamometer will also be custom-made for applications other than room temperature.

As a method for suppressing the cost when cooling the test piece, for example, a support top plate hung on the ceiling of a test room is provided with a cooler and a blower to which refrigerant from a cooling device provided outside the room is supplied and a vehicle body cooler. The vehicle body cooling means having the above is provided, and a roll-up type curtain made of a heat insulating sheet reaching the floor surface of the test room from the lower surface of the supporting top plate is installed on the entire outer side of the lower part of the supporting top plate, and the curtain pulled out from the roll. It has been proposed to cool a test vehicle arranged in an internal space surrounded by a to a required test temperature by a vehicle body cooling means (for example, refer to Patent Document 1).

Utility model registration No. 3014252

In the case of Patent Document 1, it is possible to cool the entire test vehicle to a required test temperature by cooling only the small internal space surrounded by the curtain and the vehicle placed therein, and when cooling the entire test room. In comparison, the time required for cooling the test vehicle can be shortened. As a result, the cost for cooling can be suppressed.

However, in the case of Patent Document 1, by providing the vehicle body cooling means provided on the supporting ceiling plate suspended on the ceiling of the test room, the supporting ceiling plate is provided with piping for flowing brine, CFC refrigerant, or the like. The cooling equipment in the test equipment is larger than the conventional equipment that controls the temperature of the air by installing a cooling coil in the middle of the blowing air passage that simulates the vehicle speed. Therefore, it is required to provide a simple system for cooling the specimen.

Further, in the case of Patent Document 1, the vehicle body cooling means and the wind-up type curtain are fixed to a supporting top plate hung on the ceiling of the test room, and an engine dynamometer, a chassis dynamometer, or a power train dynamometer is installed. If the test chamber is a fixed cooling system and the specimen is being cooled, it cannot be tested on other specimens because it cools while occupying the dynamometer. There is a problem that the cooling place of the specimen and the place where the test is conducted are the same.

The present invention is not a large-scale environmental test room that implements a cooling system for cooling a test specimen with a simple configuration and air-conditions the entire test room, but a test piece and a set of air conditioning equipment that creates test temperature and humidity conditions for the test piece. , And are miniaturized by being placed inside and on the top so that they can be moved.For example, by using the measuring equipment installed in the room temperature test room, it is possible to perform the test under the predetermined temperature and humidity conditions of the test piece. The purpose is to provide a mobile constant temperature and humidity chamber and test equipment.

In order to solve the above-mentioned problems, the mobile constant temperature and humidity chamber of the present invention is composed of a plurality of heat insulation panels and a frame, and a structure having an internal space in which a test object to be tested can be installed. , An air conditioner installed on the upper part of the structure and capable of maintaining the internal space under predetermined environmental conditions, and a lower part of the structure for floating the structure above the floor surface. And a movement assisting device capable of assisting movement of the structure.

Further, a first frame on which the structure is placed and the movement assisting device is fixed, a second frame which is arranged above the structure and supports the air conditioner, and the first frame. And a reinforcing member composed of a connecting member for connecting the second frame.

Here, the movement assisting device includes a device main body and a diaphragm having a hole portion that is disposed on a lower surface side of the device main body and leaks supplied air, and leaks from a hole portion provided in the diaphragm. It is an air bearing that forms an air film on the upper part of the floor surface by leaking the generated air to the outside from between the diaphragm and the floor surface.

In addition, it is preferable that a plurality of the air bearings are arranged based on the weight distribution of the entire tank when the specimen is installed.

The structure includes at least one opening through which a measuring instrument connected to the sample installed in the internal space is inserted, an entrance/exit door for entering and exiting the internal space, A loading door for loading the sample into the internal space.

In addition, it is preferable that the test piece is a bare chassis including drive system elements of an automobile, and at least the number of drive wheels is provided in the vertical plane of the heat insulating panel of the structure.

In addition, the test equipment of the present invention includes a mobile constant temperature and constant temperature bath described above, a measuring instrument connected to the specimen installed inside the structure from the outside of the structure, and the mobile constant temperature. It is provided with a humidity constant temperature bath and a test room in which the measuring device is installed.

It should be noted that the test chamber can be moved between a first position where the mobile constant temperature and humidity chamber is used and a second position where the mobile constant humidity chamber is retracted from the first position. It is preferable to have.

According to the present invention, a cooling system for cooling a test specimen is implemented with a simple configuration, and not a large-scale environmental test room for air conditioning the entire test room, but an air conditioner for creating a test specimen and a test temperature/humidity condition of the test specimen. Since the equipment is compact and can be placed inside and on top of it so that it can be moved, for example, it is possible to perform tests under the specified temperature and humidity conditions using the measurement equipment installed in the room temperature test room. It is possible to provide a mobile constant humidity and temperature chamber and a test facility.

(A) is a perspective view showing an example of the front side structure of the mobile constant humidity oven of the present embodiment, and (b) is a perspective view showing an example of the rear side structure of the mobile constant humidity oven of the present invention. is there. It is a perspective view which shows an example of the structure of a reinforcement frame. It is a partial cross section figure which shows an example of a structure of the air conditioner used for the inside of a moving-type constant-humidity thermostat, the opening relevant to a measuring device, and a tank. It is explanatory drawing which shows the internal structure of a moving type constant humidity chamber. (A) is sectional drawing of the air bearing at the time of non-operation, (b) is sectional drawing of the air bearing at the time of operation. It is a figure which shows an example of a test facility.

Hereinafter, an example of the mobile constant humidity and temperature chamber 10 of the present invention will be described. The mobile constant-humidity and temperature-controlled bath 10 of the present invention is a device that holds the inside of a structure 15 to be described below so as to have desired environmental conditions (temperature and humidity). This mobile constant-humidity/constant-temperature bath 10 is capable of installing and holding automobile component parts in its internal space. An example of an automobile component installed in the mobile constant humidity and temperature chamber 10 is a bare chassis. Bare chassis means that drive system elements such as transmission, propeller shaft, front wheel drive shaft, rear wheel side drive shaft, front wheel side differential diff, and rear wheel side differential diff are the same as the actual vehicle. It is mounted on a vehicle chassis platform that is the bottom chassis and a temporary framework that imitates it. Note that the drive system elements that are assembled as a bare chassis in an automobile differ depending on the drive type. Therefore, the above examples of the drive system elements constituting the bare chassis are merely examples, and the front chassis side drive system elements or the rear wheel side drive system elements may not be included as the bare chassis. Hereinafter, an automobile component installed inside the mobile constant humidity and temperature chamber 10 is referred to as a test piece. In the bare chassis, each drive system element is carried into the mobile constant humidity and temperature chamber 10, and the drive elements are mutually correlated in the mobile constant temperature and constant temperature chamber 10. Be assembled into a framework.

As shown in FIG. 1 to FIG. 4, the mobile constant humidity and temperature chamber 10 has a structure 15 and a reinforcing frame 16 arranged outside the structure 15. The structure 15 is formed by combining a plurality of heat insulation panels in a box shape on each side with a frame interposed therebetween. The plurality of heat insulation panels include heat insulation panels that configure the front wall portion, the rear wall portion, the left wall portion, the right wall portion, the floor portion, and the ceiling portion. The heat insulation panel is a panel having a layered structure in which a galvalume steel plate is arranged on the exterior surface (front surface) side of a flat heat insulation material, and a stainless (SUS) plate is arranged on the back surface of the heat insulation material. Hereinafter, reference numeral 15a is used for the heat insulating panel forming the front wall portion, reference numeral 15b is used for the heat insulating panel forming the rear wall portion, reference numeral 15c is used for the heat insulating panel forming the left wall portion, and the right wall portion is formed. The heat insulating panel will be described with reference numeral 15d, the heat insulating panel forming the floor portion with reference numeral 15e, and the heat insulating panel forming the ceiling portion with reference numeral 15f.

The heat insulating panel 15a forming the front wall portion has an opening 20 through which a drive shaft of an input dynamometer (or engine shaft) installed in a test chamber 151 (external to the structure 15) described later is inserted into the structure 15. Have. Although illustration is omitted, when the drive shaft of the input dynamometer 165 installed in the test chamber 151 is inserted into the structure 15 through the opening 20, the drive shaft of the input dynamometer 165 and the opening 20 are separated. There is a gap between them. A heat insulating material such as AEROFLEX (registered trademark) is embedded in the gap in a rotatable state of the drive shaft of the input dynamometer.

In addition to the opening 20, the above-described heat insulating panel 15a has an opening 21 through which a pipe for supplying oil or coolant for automatic transmission is inserted, and openings 22 and 23 through which signal lines are inserted. The openings 21, 22, and 23 are embedded with a heat insulating material while the pipes and the signal lines are inserted.

The heat insulating panel 15b forming the rear wall portion is arranged at a position facing the heat insulating panel 15a forming the front wall portion. The heat insulation panel 15b has an opening/closing door 24 in the center. The opening/closing door 24 includes a door frame portion 24a and a door portion 24b, and the door portion 24b is pivotally attached to the door frame portion 24a via a hinge on one end side in the width direction of the door frame portion 24a. The opening/closing door 24 is opened when the drive system elements constituting the test piece are taken in and out of the structure 15.

The heat insulation panel 15c forming the left sidewall has openings 26 and 27 at both ends in the front-rear direction. The opening 26 passes through the drive shaft of the left front wheel dynamometer 166 installed outside the structure 15, which is connected to the left front wheel drive shaft that is one of the drive system elements assembled inside the structure 15. The opening 27 is inserted through the drive shaft of the left rear wheel dynamometer 167 which is also connected to the left rear wheel drive shaft. The opening 27 is an elongated hole extending in the front-rear direction of the heat insulation panel 15c. By forming the opening 27 as a long hole, it is possible to install various vehicle bare chassis having different wheel bases (distance between the front wheel shaft and the rear wheel shaft) inside the structure 15. When the drive shaft of the left rear wheel dynamometer 167, which is connected to the left rear wheel drive shaft, is inserted into the opening 27, there is a gap in the opening 27. A heat insulating material such as AEROFLEX (registered trademark) is embedded in the void portion in a state where the drive shaft of the left rear wheel dynamometer 167 is rotatable.

Further, the heat insulating panel 15c has an opening/closing door 29 in the center portion in the front-rear direction. The opening/closing door 29 includes a door frame portion 29a and a door portion 29b, and the door portion 29b is pivotally attached to the door frame portion 29a via a hinge at one end side in the width direction of the door frame portion 29a. The opening/closing door 29 is opened when a worker enters or leaves the structure 15.

Further, the heat insulating panel 15c has an operation panel 30 between the opening 26 and the opening/closing door 29 in the front-rear direction. The operation panel 30 is for performing an input operation for managing the environmental conditions of the mobile constant humidity and temperature chamber 10 of the present embodiment. The operation panel 30 is connected to a power control device 69 for air conditioning equipment, which will be described later. The operation panel 30 is, for example, a touch panel.

The heat insulation panel 15d that constitutes the right side wall portion is arranged at a position facing the heat insulation panel 15c that constitutes the left side wall portion. The heat insulation panel 15d has openings 31 and 32 at both ends in the front-rear direction. These openings 31 and 32 are provided in the heat insulation panel 15d so as to be located at the same positions as the openings 26 and 27 of the heat insulation panel 15c that constitutes the left side wall portion when the structure 15 is assembled. The opening 31 passes through the drive shaft of the right front wheel dynamometer 168 installed outside the structure 15, which is connected to the right front wheel drive shaft that is one of the drive system elements assembled in the structure 15. The opening 32 passes through the drive shaft of the right rear wheel dynamometer 169 which is also connected to the right rear wheel drive shaft. The opening 32 is an elongated hole extending in the front-rear direction of the heat insulating panel 15c, like the opening 27. When the drive shaft of the right rear wheel dynamometer 169, which is connected to the right rear wheel drive shaft, is inserted through the opening 32, there is a void portion in the opening 32. A heat insulating material such as AEROFLEX (registered trademark) is embedded in the void portion in a rotatable state of the drive shaft of the right rear wheel dynamometer 169.

Further, the heat insulation panel 15d has an opening/closing door 33 at the center portion in the front-rear direction. The opening/closing door 33 includes a door frame portion 33a and a door portion 33b, and the door portion 33b is pivotally attached to the door frame portion 33a via a hinge on one end side in the width direction of the door frame portion 33a. The opening/closing door 33 is opened when a worker enters or leaves the structure 15.

The structure 15 has a holding stand 36 and a fixed surface plate 37 in the inner space thereof, which is supported by the frame while being mechanically cut off from the heat insulating panel forming the floor. In terms of heat, because of the poor thermal conductivity of the heat insulation panels (wall/floor/ceiling) and because the gaps are also filled with heat insulation, heat insulation can be secured. The holding stand 36 pivotally supports a propeller shaft forming a bare chassis. The holding stand 36 is installed across two holding members 41 and 42 that penetrate the heat insulating panels 15c and 15d that form the left wall portion and the right wall portion of the structure 15. The two holding members 41 and 42 are respectively supported by the two frame constituent members 55 that form the lower frame 51, which will be described later, at both ends protruding from each of the heat insulating panels 15c and 15d. The reference numeral 43 is installed on the two frame components 55, and supports both ends of the two holding members 41 and 42 while preventing heat bridge from each holding member 41, 42 to the outer frame. It is a pedestal that is also a heat insulating material.

The fixed surface plate 37 is a member for holding a rear-wheel drive system element, for example, a rear-wheel drive shaft and a rear-axle housing assembly in which a rear-wheel differential differential is assembled in a housing. The fixed surface plate 37 is installed across three holding members 44, 45, 46 penetrating the heat insulating panels 15c, 15d constituting the left wall portion and the right wall portion of the structure 15. The three holding members 44, 45, 46 are respectively supported by two frame constituent members 55 constituting a lower frame 51, which will be described later, at both ends protruding from each of the heat insulating panels 15c, 15d. Reference numeral 47 is installed on the frame component 55 and supports the heat bridge from each holding member 44, 45, 46 to the outer frame while supporting both ends of the three holding members 44, 45, 46. It is a pedestal that is also a heat insulating material to prevent. Examples of the holding members 41, 42 and the holding members 44, 45, 46 described above include H-shaped steel. It should be noted that the chain double-dashed line in FIG. 4 indicates an example of the test piece installed inside the structure 15.

The reinforcing frame 16 includes a lower frame (corresponding to the first frame in the claims) 51, an upper frame (corresponding to the second frame in the claims) 52, and four connecting members 53 for connecting the frames 51, 52. Composed. The lower frame 51 is a member on which the structure 15 is placed. The lower frame 51 is formed of a rectangular frame having two types of frame constituent members 55 and 56 having different lengths as long sides and short sides. Examples of the frame components 55 and 56 include H-section steel. In the lower frame 51, three reinforcing frame members 57 are arranged in parallel with the frame component member 56 with a fixed interval between the two frame component members 55, 55 that are long sides.

Like the lower frame 51, the upper frame 52 has a rectangular frame shape having two types of frame constituent members 58 and 59 having different lengths as long sides and short sides. The size of the upper frame 52 and the size of the lower frame 51 are the same. Examples of the frame constituent members 58 and 59 include H-shaped steel.

The four connecting members 53 are members that connect the lower frame 51 and the upper frame 52 at the four corners of the lower frame 51 and the upper frame 52. Here, the connecting member 53 is, for example, H-section steel.

Of the four connecting members 53, a reinforcing member 61 is provided between the upper end portion of the connecting member 53 located on the front side and the frame forming member 58 of the upper frame 52. Further, a reinforcing member 62 is provided between the lower end of the connecting member 53 located in the front and the frame constituent member 55 of the lower frame 51. Further, a reinforcing member 63 is provided between the upper end portion of the connecting member 53 located on the rear side and the frame constituent member 58 of the upper frame 52. In addition, each of these four connecting members 53 has a grip portion 64 that is gripped by an operator in the front-rear direction of the movable constant humidity and constant temperature bath 10.

An air conditioner 68 and a power control device 69 are arranged above the structure 15. The air conditioner 68 is a device that maintains the air inside the structure 15 under predetermined environmental conditions. The environmental conditions inside the structure 15 set by the air conditioner 68 include, for example, a temperature range of −30° C. to +50° C. (±2° C.) and a humidity range of 20 to 85% (at a temperature of +10 to 25° C.). ).

The air conditioner 68 includes a pre-filter 75 from the suction port 71 side toward the discharge port 72 side in the circulation path (chamber) 73 that connects the suction port 71 and the discharge port 72 provided in the heat insulating panel 15f that forms the ceiling part. , The blower fan 76, the cooler 77, and the heater 78 are arranged in this order. Here, the chamber 73 is supported by the upper frame 52 via two support members 79 (see FIG. 1).

The pre-filter 75 removes solid particles contained in the air sucked into the chamber 73 by the blower fan 76. The cooler 77 is a cooling coil such as a direct expansion coil (evaporator). The cooler 77 forms a refrigeration cycle with a condenser and a compressor installed in a condensing unit 82 described later, an expansion valve in the vicinity of the cooler 77, and the temperature measured by the thermo-hygrometer 81. , The temperature and flow rate of the refrigerant flowing in the cooler 77 are controlled by controlling the rotation of the compressor, the expansion valve, etc. according to the deviation from the set temperature, and the temperature measured by the temperature/humidity meter 81 is set. The air sent into the chamber 73 is cooled so that the temperature becomes different. The cooler 77 is connected to the condensing unit 82, and circulates a refrigerant such as a CFC refrigerant between the cooler 77 and the condensing unit 82. When the refrigerant is circulated between the cooler 77 and the condensing unit 82, the refrigerant absorbs heat in the cooler 77, which is an evaporator, is compressed by the condensing unit 82, and then radiates heat in the condenser.

The heater 78 is, for example, an electric heater. The heater 78 controls a thyristor or the like that increases or decreases the output of the electric heater according to the deviation between the temperature measured by the temperature/humidity meter 81 and the set temperature, and the temperature measured by the temperature/humidity meter 81. The air sent into the chamber 73 is heated so that the temperature reaches the set temperature.

Inside the chamber 73, between the blower fan 76 and the cooler 77, an inlet 83a of a pipe 83 for feeding the dehumidified air into the chamber 73 is provided. The pipe 83 is connected to the air tank 100. From the air tank 100 side, the pipe 83 is arranged in the order of the electromagnetic valve 84, the prefilter 85, the air dryer 86, and the regulator valve (pressure reducing valve) 87. The solenoid valve 84 is operated when the humidity measured by the thermo-hygrometer 81 is higher than the set humidity, and sends the air from the air tank 100 toward the pre-filter 85. The pre-filter 85 removes solid particles contained in the air sent when the solenoid valve 84 is opened. The air dryer 86 operates when the solenoid valve 84 is open to dry the air that is sent. The regulator valve 87 adjusts the pressure of the air supplied to the inside of the chamber 73, and sends dry air into the inside of the chamber 73.

The nozzle 88a of the humidifier 88 is disposed between the heater 78 and the outlet 72 inside the chamber 73 described above. The humidifier 88 boils water in a kettle in the main body installed outside the chamber 73 and discharges low-pressure steam generated from a nozzle. The humidifier 88 determines the amount of steam generated in the kettle as a current output to an electrode rod or an electric heater. Proportional control can be performed by the lower limit, and proportional control is performed according to the deviation between the humidity measured by the thermo-hygrometer 81 and the set humidity. The humidifier 88 supplies, for example, pure water supplied through the pure water filter 101 to a kettle in the main body of the humidifier 88, and a predetermined amount of humidified steam is supplied as low-pressure steam from the tip of the nozzle 88a into the chamber 73. Supply and humidify.

The power control device 69 of the air-conditioning facility receives the input operation from the operation panel 30 provided on the side of the structure 15 or the operation panel (not shown) provided inside the structure 15 (not shown), and is movable. The air conditioner 68 included in the constant temperature and constant temperature tank 10 is started and stopped and controlled. Further, the power control device 69 may further include a circuit for performing start/stop drive control of the illumination device 90 and the monitoring camera 91 inside the structure 15, and may be collectively operated.

The mobile constant humidity oven 10 of the present embodiment has a plurality of moving bases 95 below the lower frame 51. The moving table 95 is, for example, an air bearing. Hereinafter, the air bearing will be described with reference numeral 95. Here, the air bearing 95 corresponds to the movement assisting device in the claims.

As shown in FIGS. 5A and 5B, the air bearing 95 includes a pedestal 96 and a diaphragm 97. The diaphragm 97 is expanded by the air supplied from the compressor 102, and a part of the supplied air is ejected from the ejection hole 97a of the diaphragm 97 between the diaphragm 97 and the floor surface F. The air ejected from the ejection holes 97a between the diaphragm 97 and the floor surface F flows along the lower surface of the diaphragm 97 and escapes to the outside. At this time, a thin air layer (air film) is formed between the diaphragm 97 and the floor surface F, and the diaphragm 97 floats with the pedestal 96 placed thereon. Therefore, a static frictional force or a dynamic frictional force corresponding to the weight of the entire tank is hardly generated, and if there is a force against the inertial force, the load B placed on the pedestal 96 can be moved with a slight force. Here, reference numeral 103 is a pipe for sending air from the compressor 102 into the diaphragm. Although illustration is omitted, an air tank may be additionally provided in order to suppress pulsation of air sent from the compressor 102.

As an example, the air bearings 95 are installed at both ends of the two frame constituent members 55 that form the lower frame 51 and at a position where the length in the longitudinal direction of the frame constituent member 55 is divided into three equal parts. The installation location and the number of the air bearings 95 are determined based on the load that the air bearings 95 can receive and the weight distribution of the mobile constant temperature and humidity chamber 10.

In the present embodiment, a plurality of moving bases 95 are provided below the lower frame 51. However, for example, in the case of the structure 15 in which a heat insulating panel is assembled to a rectangular parallelepiped frame, the bottom is configured. The moving table 95 may be provided on the bottom surface of the heat insulating panel 15e. In this case as well, the installation location and the number of the air bearings 95 are determined based on the load that the air bearings 95 can receive and the weight distribution of the mobile constant temperature and humidity chamber 10.

The pipe 103 connected to each air bearing 95 is connected to a manifold 104 provided on the lower frame 51. The manifold 104 supplies the air sent from the compressor 102 to the air bearing 95. Reference numeral 105 denotes a cock valve 105 that sends air from the compressor 102 to each air bearing 95 by an opening operation and shuts off air from the compressor 102 by a closing operation. The opening and closing of the cock valve 105 is performed by an operator's operation.

An example of test equipment in which the above-mentioned mobile constant humidity and temperature chamber 10 is used will be described. As shown in FIG. 6, the test facility 150 has a test room 151 and a control room 152. In FIG. 6, the control room 152 also serves as a measurement room. The test facility 150 is a facility for performing a drive train test and a vehicle test. The drive train test is a test for measuring the performance and durability of the bare chassis in which each drive system element is assembled.

For example, in a drive train test, when the bare chassis at the time of stop is started and operated under the environmental conditions in the mobile constant temperature and humidity chamber 10 that reproduces an environment anywhere in the world at a predetermined environmental temperature and humidity One example is a test in which friction such as oil in the system and changes in the operating conditions of the drive system mechanical parts are measured and fed back to the development.

The test chamber 151 has constant humidity and constant temperature performance. Although not shown, the test chamber 151 has an air conditioner, and the environmental conditions of the test chamber 151 can be set. The environmental conditions set by the air conditioner installed in the test chamber 151 may be the same as or different from the environmental conditions of the mobile constant humidity and temperature chamber 10. In addition, when performing the drive train test using the mobile constant humidity and temperature chamber 10, the temperature of the test chamber 151 is 20 to 20 in view of the comfort of the worker who works outside the structure 15 inside the test chamber 151. It is set in the range of 30°C.

The above-mentioned mobile constant humidity and temperature chamber 10 is movably installed inside the test chamber 151. The movable constant-humidity/temperature chamber 10 can be moved between a position indicated by a solid line in FIG. 6 (reference numeral 10) and a position indicated by a two-dot chain line in FIG. 6 (reference numeral 10'). The position shown by the solid line in FIG. 6 is the position of the mobile constant temperature and humidity chamber 10 when the drive train test is performed on the specimen installed inside the mobile constant temperature and constant temperature chamber 10 (hereinafter, used position). Is. Further, the position indicated by the chain double-dashed line in FIG. 6 is the position of the mobile constant humidity oven 10 when the drive train test is performed without using the mobile constant humidity oven 10 or when another vehicle test is performed ( Hereinafter, the retracted position). Although illustration is omitted, the lower frame 51 of the reinforcing frame 16 constituting the movable constant temperature and constant temperature tank 10 has openings at, for example, four corners or in the vicinity thereof, and pins inserted into these openings are provided on the floor surface. By inserting into the provided hole, the mobile constant humidity and temperature chamber 10 can be positioned at the use position or the retracted position.

On the floor surface of the test chamber 151, two moving paths 161 and 162 are provided in parallel so that the movable constant temperature and constant temperature tank 10 can be moved between the above-mentioned use position and the retracted position. The moving path 161 has a structure in which a plurality of flat panel panels 161a are linearly arranged. Examples of the flat panel 161a include a panel in which a sheet material such as vinyl chloride is attached to the surface of a plastic veneer made of a plastic material such as polypropylene. Similarly to the moving path 161, the moving path 162 also has a structure in which a plurality of flat panel panels 162a are linearly arranged.

Performance (running performance) and air consumption when the above-described air bearing 95 is run depend on the condition of the floor surface. That is, when the air bearing 95 is run, it is premised that the floor surface is flat and there is no unevenness such as cracks or steps. Therefore, by providing the moving paths 161 and 162 having the above structure in the test chamber 151, the running performance of the air bearing 95 and the air consumption amount during running can be stabilized.

It is also possible to install not only the moving path but also a guide member that regulates (guides) the moving direction of the mobile constant humidity and temperature chamber 10 in the test chamber.

The test chamber 151 includes, in addition to the mobile constant temperature and constant temperature tank 10 described above, an input dynamometer 165, a left front wheel dynamometer 166, a left rear wheel dynamometer 167, a right front wheel dynamometer 168, and a right rear wheel dynamometer. It has a meter 169. These dynamometers correspond to the measuring device in the claims. Among these dynamometers, the input dynamometer 165, the left rear wheel dynamometer 167, and the right rear wheel dynamometer 169 are shown by the solid line in FIG. 6 and the position shown by the chain double-dashed line in FIG. 6 (reference numeral 167). 'And reference numeral 169'). That is, the left rear wheel dynamometer 167 and the right rear wheel dynamometer 169 can be moved in accordance with the positions of the drive system elements on the rear wheel side installed as the test piece. The test chamber 151 also includes an air tank 100, a pure water filter 101, and a compressor 102.

Although not shown in FIG. 6, when an electric vehicle, a hybrid vehicle, or the like is to be subjected to the drive train test, a battery used for the electric vehicle or the hybrid vehicle may be installed inside the test chamber 151. It is possible.

The movement path 162 intersects with the movement path of the input dynamometer 165 described above. For example, when carrying out a vehicle test without using the movable constant humidity oven 10, it is necessary to move the movable constant humidity oven 10 from the use position to the retracted position. In this case, the following work is performed.

First, the worker removes the flat panel panel 162a included in the moving path 162 from the flat panel panel 162a located on the moving path of the input dynamometer 165, and moves the input dynamometer 165 from the position shown by the solid line in FIG. It is moved to the position shown by the chain double-dashed line in FIG. Then, the worker installs the removed flat panel 162a in the original position. Finally, the operator opens the cock valve 105. When the cock valve 105 is opened, air is supplied to each air bearing 95, and the mobile constant temperature and constant temperature bath 10 floats. In response to this, the worker moves the movable constant humidity and temperature chamber 10 from the use position to the retracted position. At this time, since the movable constant humidity bath 10 is floating, the movable constant humidity bath 10 can be moved with a slight force. Therefore, it is not necessary for a large number of workers to move the mobile constant-humidity/constant temperature bath 10, and a small number of workers can perform the moving work. After that, the vehicle is carried in, four tires are removed and jacked up, and the test is performed by connecting the drive shaft of the vehicle and the shaft of each wheel dynamometer.

If the input dynamometer 165 is used, the worker removes the flat panel 162a that is located on the moving path of the input dynamometer 165 from the flat panel 162a that forms the moving path 162. The dynamometer 165 is moved from the position shown by the chain double-dashed line in FIG. 6 to the position shown by the solid line in FIG. Finally, the worker installs the removed flat panel 162a at the original position.

On the other hand, when performing a vehicle test or a bare chassis test in which drive system elements are assembled using the mobile constant humidity oven 10, it is necessary to move the mobile constant humidity oven 10 from the retracted position to the use position. Also in this case, the operator removes the flat panel 162a located on the moving path of the input dynamometer 165, and moves the input dynamometer 165 from the position shown by the solid line in FIG. 6 to the position shown by the chain double-dashed line in FIG. To move. After that, the operator opens the cock valve 105 and floats the mobile constant humidity and temperature chamber 10. Then, the worker moves the movable constant humidity and constant temperature bath 10 from the retracted position to the use position. At this time as well, as in the case of moving from the use position to the retracted position, since the movable constant-humidity constant temperature bath 10 is floating, the movable constant-humidity constant temperature bath 10 can be moved with a slight force.

After moving the mobile constant temperature and humidity chamber 10 from the retracted position to the use position, the worker uses the drive system element for the vehicle test (in this case, the drive train test) as a test object to move the mobile constant temperature and constant temperature chamber 10. Install inside the. The operator inserts the drive shaft of the input dynamometer 165 into the opening 20 of the heat insulation panel 15a and connects it to the drive system element. Further, the drive shaft of the dynamometer 166 for the left front wheel is inserted into the opening 26 of the heat insulating panel 15c, and the drive shaft of the dynamometer 167 for the left rear wheel is inserted into the opening 27, and is connected to the corresponding drive system element. Furthermore, the drive shaft of the dynamometer 168 for the front right wheel is inserted through the opening 31 of the heat insulating panel 15d, and the drive shaft of the dynamometer 169 for the rear right wheel is inserted through the opening 32, and is connected to the corresponding drive system element. At this time, since a gap is created in each opening, the gap is filled with the above-described heat insulating material. Finally, the operator operates the operation panel 30 to set the environmental conditions for performing the drive train test. In response to this, the air conditioner 68 operates to maintain the inside of the structure 15 at the set environmental conditions (temperature, humidity). For example, when the set environmental condition is a cold environment, the inside of the structure 15 is cooled, and at the same time, the drive system elements installed as the test piece are also cooled. Further, when the set environmental condition is a hot and hot environment, the inside of the structure 15 is heated, and at the same time, the drive system elements are also heated.

As described above, by providing the movable constant-humidity thermostatic chamber 10 in the test chamber 151, the temperature and humidity in the test chamber 151 are not kept at the set temperature and humidity, but are kept inside the structural body 15 at a minimum. It is only necessary to keep the temperature and humidity in the range limited to the set temperature and humidity. Therefore, it is not necessary that the equipment for performing the drivetrain test on the drive system elements is a large-scale equipment, and the above-mentioned drivetrain test can be performed inside the existing building. That is, although the mobile constant humidity oven 10 can be used as a test facility provided in the test chamber 151, the mobile constant humidity oven 10 shown in the present embodiment, a dynamometer, and other measuring equipment can be used. As long as the environment can be installed, the dynamometer installation room, which is normally used as a room temperature test, can easily switch to the environment test in the low and high temperature field regardless of the location, and the drive train can be used under various conditions at low cost. It becomes possible to carry out a test.

In addition, the mobile constant temperature and humidity chamber 10 has a through-hole so that the drive shaft for measurement drive of the measuring instrument can be penetrated from the outside, and if only the through-hole is thermally insulated at a low temperature, the drive train test can be performed. Since the dynamometer and other measuring devices for performing the operation are used at room temperature, it is possible to use general-purpose measuring devices instead of measuring devices that meet environmental conditions.

DESCRIPTION OF SYMBOLS 10... Mobile constant-humidity thermostat, 15... Structure, 15a, 15b, 15c, 15d, 15e, 15f... Insulation panel, 16... Reinforcing frame, 51... Lower frame, 52... Upper frame, 53... Connecting member, 68 ... Air conditioner, 95... Air bearing, 96... Pedestal, 97... Diaphragm, 150... Test equipment, 151... Test chamber, 161, 162... Moving path, 165... Input dynamometer, 166... Left front wheel dynamometer, 167 ... Dynamometer for left rear wheel, 168... Dynamometer for right front wheel, 169... Dynamometer for right rear wheel

Claims (8)

A structure that is composed of a plurality of heat insulation panels and a frame and has an internal space in which a test object to be tested can be installed,
An air conditioner installed on the upper part of the structure, capable of maintaining the internal space under predetermined environmental conditions,
A movement assisting device that is provided in the lower part of the structure and that can assist the movement of the structure by levitating the structure with respect to the floor surface,
A mobile constant-humidity and temperature-controlled bath characterized by being equipped with. In the mobile constant humidity and temperature chamber according to claim 1,
A first frame on which the structure is placed and the movement assisting device is fixed, a second frame disposed above the structure and supporting the air conditioner, the first frame and the first frame. A mobile constant-humidity thermostat, comprising a reinforcing member composed of a connecting member for connecting the two frames. In the mobile constant humidity and temperature chamber according to claim 1 or 2,
The movement assisting device includes a device main body and a diaphragm having a hole portion that is disposed on a lower surface side of the device main body and that leaks supplied air, and removes air leaking from the hole portion provided in the diaphragm. A mobile constant temperature and humidity bath, which is an air bearing that forms an air film on the upper part of the floor surface by leaking to the outside from between the diaphragm and the floor surface. In the mobile constant temperature and humidity chamber according to claim 3,
A plurality of the air bearings are arranged based on the weight distribution of the entire tank when the test piece is installed, and the mobile constant humidity and constant temperature tank. In the mobile constant humidity and temperature chamber according to any one of claims 1 to 4,
The structure is
At least one opening through which a measuring instrument connected to the specimen installed in the internal space is inserted;
An entrance and exit door for entering and leaving the interior space,
A carrying-in door for carrying in the specimen into the internal space,
A mobile constant-humidity and temperature chamber characterized by having. In the mobile constant humidity and temperature chamber according to any one of claims 1 to 5,
The specimen is a bare chassis including drivetrain elements of an automobile,
A movable constant humidity oven, wherein at least the number of driving wheels is provided in the vertical plane of the heat insulating panel of the structure. A mobile constant temperature and humidity chamber according to any one of claims 1 to 6,
A measuring instrument connected to the specimen installed inside the structure from the outside of the structure,
A test chamber in which the mobile constant humidity and temperature chamber and the measuring device are installed,
A test facility comprising: The test facility according to claim 7,
The test chamber has a moving path that can be moved between a first position where the movable constant temperature and constant temperature bath is used and a second position where the movable constant temperature and constant temperature bath is retracted from the first position. A test facility characterized by having.

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